Randy Durband, Chief Executive Officer

Randyx-2Randy Durband has had two careers in travel and tourism – twenty-plus years in senior leadership positions at some of the finest U.S. tour operators, having served as President for Travcoa, INTRAV, and Clipper Cruise Lines, (brands within TUI Travel plc), plus Executive Vice President of Tauck World Discovery. Following that, in his second travel and tourism career, Randy advanced the work of Sustainable Tourism as an advisor, consultant, and speaker.  He brings his knowledge of the business of travel, his global network of travel professionals, and a passion for sustainability to support the GSTC and the general sustainable tourism movement. He has held several board positions and committee memberships in travel and tourism organizations, and is a frequent speaker on sustainable tourism issues.

Contact Randy at This email address is being protected from spambots. You need JavaScript enabled to view it.  

Greta Andzenge, Membership & Communications Director

Head shots 105Greta Andzenge's background in marketing, public relations, tourism and sustainable development have led to her role at GSTC.  Greta has been a key member of multiple international travel wholesalers specializing in the Caribbean region, directing international sales, product development, and relationship management. Her work with Marketplace Excellence Corporation has involved varied public relations, communications, strategy and sustainable development roles.  Her passion for promoting sustainable development has extended to non-profit service with the Caribbean Media Exchange (CMEx) supporting local and community development as well as the media.

In addition to a BA in Business Administration from Metropolitan State University, Greta holds a Master of Tourism Administration from The George Washington University School of Business, with a concentration in Sustainable Destination Management. 

Contact Greta at This email address is being protected from spambots. You need JavaScript enabled to view it.

Kathleen Pessolano, Destinations Program Director & Associate Technical Director

KP PhotoKathleen Pessolano is Director of the GSTC Destinations Program. She also serves as Associate Technical Director for the GSTC. Kathleen is an attorney and international practitioner at the intersection of tourism and sustainable development. She assists destinations with planning, policy, and management systems to develop tourism while protecting the natural and cultural resources loved by visitors and residents alike. Kathleen especially enjoys working directly with communities to build capacity, devise strategies to broaden community benefits from tourism, and launch public-private governance structures for sustainable destination management. Kathleen is particularly passionate about coastal tourism issues and small island development. In the last decade, Kathleen has worked for the GSTC, The Heritas Group, Cultural Heritage Partners PLLC, Sustainable Travel International, and served as an attorney for the U.S. Federal Trade Commission and the law firm O'Melveny & Myers LLP. Before law school, Kathleen helped the Center for International Private Enterprise advance private sector development in Latin America & the Caribbean.

Contact Kathleen at This email address is being protected from spambots. You need JavaScript enabled to view it. 

  • 1
how you help red
Anyone from individuals to larger organizations can help increase the reach, awareness and recognition of sustainable tourism practices.  
Already a member? Log in
Facebook logo red 32r Twitter logo red 32r LinkedIn logo red 32r mail button red


United Nations Foundation



TUI Group black lightblue 3C


  • kuoni_group.jpg
  • 75logos-utah.jpg
  • airbnb_vertical_lockup_web.jpg
  • Logo.jpg
  • Confluence_logo_web_sm-2.jpg
  • Altruvistas-Use-this-square.jpg
  • SayamaTravel.jpg
  • Khiri.jpg
  • TORNOS-NEWS_Logo_Blue_CMYK-300dpi.jpg
  • barcelonaturisme.jpg
  • CarpeDM.jpg
  • AACS.jpg
  • Settemari.jpg
  • LOGO_ELISA.jpg
  • Ecamp.jpg
  • qualitycoast-flag-resized.jpg
  • ihg.jpg
  • GTP-Logo.png
  • ThailandStandards.png
  • TLB_logo.jpg
  • 12logos-crest.jpg
  • CED.jpg
  • MasContour_Gro.jpg
  • LOGOSRM.jpg
  • STI_FINAL_master_100x23.jpg
  • FunDayTours.jpg
  • ecola.jpg
  • green-loons-logo copy 2.jpg
  • Travelife.png
  • ID-Tourism.jpg
  • FEDEC.jpg
  • GPPA-logo.jpg
  • TOFTigers.jpg
  • PCGS-Logo.png
  • ecoservices.jpg
  • 77WildAsiaLogo.jpg
  • EarthCheck300dpi.jpg
  • image.jpeg
  • Flocert_logo_RGB.jpg
  • GeorgianTA-logo.jpg
  • GreenEvolution.jpg
  • glp_new_logo.png
  • AGA_logo_circle.jpg
  • 28Logo_GGD-no_sello.jpg
  • 37logos-hostelling-intl.jpg
  • 40intercontinentalnewyork.jpg
  • Green_Pearls_150.jpg
  • glooby-logo.jpg
  • 52logos-rainforest-alliance.jpg
  • Project_Azul_Verde_100.jpg
  • JHY-Sustainable-Destination-Program-Logo_100x95.jpg
  • GK_Global_colour.jpg
  • 16eceat.jpg
  • ecoclub-com-logo-100x40.png
  • logos.jpg.png
  • Vesselka.png
  • EcoAustralia.jpg
  • WWFLogotab.png
  • ftt brand logo.jpg
  • WFEN_100x53.jpg
  • Confluence_logo_web_100.jpg
  • 33HSAC.jpg
  • Tourcert-Siegel-schraeg.jpg
  • LightBlue.jpg
  • gg-ggilogo-300x291.jpg
  • openmarket-logo-sm-trans.png
  • Turistiko.jpg
  • FOW.jpg
  • DTN-Logo-high-res.png
  • 41InstitutodeTurismo.jpg
  • Infinity-Travel.jpg
  • The-Globe-Ecotourism_Trainingcentre.jpg
  • botswana.jpg
  • thailanddot.jpg
  • TUI_Group_black_lightblue_3C.jpg
  • Transat_2c.jpg
  • 3AGEG_Logo.jpg
  • TrainingAid_100x32.png